/ Thesaurus / S Synonyms of sluice down Find synonyms for: Verb1. sluice, sluice down, pour, pelt, stream, rain cats and dogs, rain bucketsusage: pour as if from a sluice; "An aggressive tide sluiced across the barrier reef"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language